package com.hejian.dm.ch2.client;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufUtil;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandler.Sharable;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.util.CharsetUtil;

/**
 * Listing 2.3 of <i>Netty in Action</i>
 *
 * @author <a href="mailto:norman.maurer@googlemail.com">Norman Maurer</a>
 */
@Sharable
public class EchoClientHandler extends SimpleChannelInboundHandler<ByteBuf> {

	@Override
	public void channelActive(ChannelHandlerContext ctx) {
		ctx.writeAndFlush(Unpooled.copiedBuffer("Netty rocks!", CharsetUtil.UTF_8));
	}

	// public void channelRead(ChannelHandlerContext ctx, ByteBuf in) {
	// System.out.println("Client received: " + in.toString(CharsetUtil.UTF_8));
	// }

	@Override
	public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
		cause.printStackTrace();
		ctx.close();
	}

	@Override
	protected void messageReceived(ChannelHandlerContext ctx, ByteBuf msg) throws Exception {
		System.out.println("Client received: " + msg.toString(CharsetUtil.UTF_8));
	}
}
